Accounts Receivable and Allowance for Doubtful Accounts (Tables)

3 Months Ended

Mar. 31, 2014

Receivables [Abstract]

Summary of Accounts Receivable

The allowance for doubtful accounts is an estimate of losses that may result from customers’ inability to make payment on their outstanding balances.

	March 31			December 31,
	2014			2013
Accounts receivable	$	21,988		$	29,178
Allowance for doubtful accounts		(550	)		(650	)
Accounts receivable, net	$	21,438		$	28,528